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El. knyga: Low-Angle Polarized Neutron and X-Ray Scattering from Magnetic Nanolayers and Nanostructures

  • Formatas: EPUB+DRM
  • Serija: Springer Tracts in Modern Physics 273
  • Išleidimo metai: 12-Aug-2017
  • Leidėjas: Springer International Publishing AG
  • Kalba: eng
  • ISBN-13: 9783319632247
  • Formatas: EPUB+DRM
  • Serija: Springer Tracts in Modern Physics 273
  • Išleidimo metai: 12-Aug-2017
  • Leidėjas: Springer International Publishing AG
  • Kalba: eng
  • ISBN-13: 9783319632247

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This research monograph presents the latest results related to the characterization of low dimensional systems. Low-angle polarized neutron scattering and X-ray scattering at grazing incidence are used as the two main techniques to explore various physical phenomena of these systems. Special focus is put on systems like thin film transition metal and rare-earth layers, oxide heterostructures, hybrid systems, self-assembled nanostructures and self-diffusion.

Readers will gain in-depth knowledge about the usage of specular scattering and off-specular scattering techniques. Investigation of in-plane and out-of-plane structures and magnetism with vector magnetometric information is illustrated comprehensively. The book caters to a wide audience working in the field of nano-dimensional magnetic systems and the neutron and X-ray reflectometry community in particular.

1 Introduction
1(12)
1.1 Polarized Neutron Reflectometry on Metallic Nanolayers and Multilayers
2(6)
1.2 Grazing Incidence Small Angle X-Ray Scattering on Self-organized Metallic Nanostructures
8(5)
2 Low-Angle Scattering Theory and Techniques
13(30)
2.1 Polarized Neutron Scattering
13(23)
2.1.1 Fundamentals in Neutron Scattering
14(2)
2.1.2 Refractive Index and Specular Reflection
16(2)
2.1.3 Polarized Neutron Specular Reflectivity
18(5)
2.1.4 Resolution and Coherence Volume
23(5)
2.1.5 Off-Specular Neutron Scattering
28(8)
2.2 Grazing Incidence Small Angle X-Ray Scattering
36(7)
3 Scattering Instruments
43(6)
3.1 Neutron Reflectometer
43(4)
3.1.1 Monochromator Instrument
43(2)
3.1.2 TOF Instrument
45(2)
3.2 GISXAS Instruments
47(2)
4 Magnetic Nanolayers and Superlattices
49(54)
4.1 Interlayer-Exchange Coupling
49(12)
4.1.1 Interlayer-Coupling Through Metallic Systems
49(3)
4.1.2 Oscillatory Nature and Non-collinear Coupling
52(1)
4.1.3 Magnetic Domain Structure
53(1)
4.1.4 Fermi Surface Topography
54(1)
4.1.5 Spin-Flop Phase
54(1)
4.1.6 Coupling of Heusler Alloys
55(1)
4.1.7 Domain Structure Evolution with Number of Bilayers
55(4)
4.1.8 Interlayer Coupling Through Semiconducting Spacers
59(1)
4.1.9 Twisted State of Interface Magnetization
59(2)
4.2 Dilute Magnetic Semiconductor
61(6)
4.2.1 Coupling of Superlattices
63(1)
4.2.2 Magnetic Ion Distribution
64(1)
4.2.3 Coupling of DMS via Doped Spacer
64(1)
4.2.4 Ge Based DMS: Homogeneity and Inhomogeneity
64(3)
4.3 Exchange Bias at Antiferromagnetic-Ferromagnetic Interfaces
67(28)
4.3.1 Exchange Bias
67(2)
4.3.2 Correlation of Bias Field with the Number of Uncompensated Spins in the AF and Increase in Coercivity
69(1)
4.3.3 Asymmetric Magnetization Reversal
69(3)
4.3.4 Training Effect
72(1)
4.3.5 Exchange Coupled Double-Superlattice
73(1)
4.3.6 Depth Dependence of Magnetization
74(1)
4.3.7 Grain-Size Induced Exchange Bias
74(3)
4.3.8 Mystery of Symmetry and Asymmetry in Reversal
77(4)
4.3.9 Magnetization Reversal in Bilayer and Multilayer
81(3)
4.3.10 Field-Cooling and Training in Bilayer Units
84(4)
4.3.11 Change in Interface Magnetism Due to the Presence of Nonmagnetic Spacers
88(2)
4.3.12 Exchange Bias Manipulation by keV or GeV Ion Irradiation
90(3)
4.3.13 Recovery of the Untrained State
93(2)
4.4 Coupling in Multilayers with Non-collinear Spin Textures
95(8)
4.4.1 Rare-Earth/Ferromagnetic Multilayer
95(4)
4.4.2 Rare-Earth/Rare-Earth Multilayer
99(4)
5 Self-assembly of Nanolayers and Nanostructures
103(12)
5.1 Self-assembly of Nanolayers
103(8)
5.1.1 Superparamagnetic Nanopiliar-Like Structures
104(1)
5.1.2 Metal--Oxide Interfaces
105(4)
5.1.3 Oxide--Oxide Interfaces
109(2)
5.2 In Situ Growth Morphology
111(4)
5.2.1 Au on Quantum Dot Template
111(1)
5.2.2 Fe-Pt Nanolayer Morphology Due to Low Temperature Annealing
112(3)
6 Magnetic Oxide Heterostructures and Their Interfaces: Proximity and Coupling
115(10)
6.1 Ferroelectric--Ferromagnet Interfaces
115(6)
6.1.1 Enhanced Moment at the Interface
116(1)
6.1.2 Vertical Shift Due to Exchange Coupling
116(3)
6.1.3 Exchange Coupling Due to Symmetry Mismatch
119(2)
6.2 Superconductor--Ferromagnet Interfaces
121(4)
6.2.1 Superconductivity-Induced Magnetization Depletion
121(4)
7 Self-diffusion Kinetics in Layered Systems
125(6)
7.1 Self-diffusivity and the Effect of Grain Size
125(6)
7.1.1 Ex Situ Self-diffusivity with Grain Size Variation
126(1)
7.1.2 In Situ Self-diffusivity
127(4)
8 Summary and Outlook
131(4)
References 135
Dr. Paul is doing research at the neutron scattering department of the Technical University Munich. His focus is on fundamental and applied research on novel nanomaterials. He received his PhD from Indore University, India and spent his early postdoc phase collaborating with Nobel laureate Peter Grünberg in Jülich, Germany.

Amitesh Paul's work is addressing the fundamental details of interface magnetism, such as exchange bias, interlayer exchange coupling, magnetization reversal, anisotropic properties, as well as magneto-transport properties in layered materials and layered oxide heterostructures. His particular interest lies in layer resolved magnetization profiles and lateral magnetic correlations and domains, using polarized neutron scattering and grazing incidence x-ray and neutron scattering as the main techniques.